The Diene Synthesis with Unsymmetrical Butadienes and β-Nitrostyrenes<sup>1</sup>
作者:W. C. Wildman、R. B. Wildman、W. T. Norton、J. B. Fine
DOI:10.1021/ja01104a040
日期:1953.4
Novel access to cyclohexane-1,4-diones and 1,4-hydroquinones via radical 1,2-acyl rearrangement on 2-(halomethyl)cyclopentane-1,3-diones using cobaloxime-mediated electroreduction or tributyltin hydride
作者:Hiroyuki Kawafuchi、Tsutomu Inokuchi
DOI:10.1016/s0040-4039(02)00163-6
日期:2002.3
hydroquinones 3, with the option of introducing alkyl and aryl substituents, was developed by radical 1,2-acyl rearrangement on 2-(halomethyl)cyclopentane-1,3-diones 1, accessible from 1,2-bis(trimethylsiloxy)cyclobutene and α-bromo ketone dimethyl acetals. The electroreduction of monoacetals of 1 in the presence of cobaloxime as a catalyst afforded the cyclohexane-1,4-dione monoacetals in good yields